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The functions are $\"\"$ .

The graph of $\"\"$ is the graph of $\"\"$ stretched vertically, if $\"\"$ that means $\"\"$ ,the graph of $\"\"$ is stretched vertically.

The graph of $\"\"$ is the graph of $\"\"$ compressed vertically, if $\"\"$ that means $\"\"$ ,the graph of $\"\"$ is compressed vertically.

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The graph of $\"\"$ has stretched and compressed vertically,

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